Cometic Gaskets, made in the USA, are renowned as the best in the world, exceeding OEM quality. Cometic Lower Engine case sets are great for racers and workshops, They usually include clutch,sump,generator cover,ignition cover,tensioner.Cometic cover gaskets are far superior to the thin oem gaskets, they are constructed from an advanced aluminium polymer sandwich for the ultimate seal and reusablilty.